Field



(No Model.)

J. CQ-BUTTERFIELD & T. 0. BATGHELOR. GARTRIDGE CASE.

No.'542,041. Patented July '2, 1895.

fig. 1.

Witweww aa wamtow attomm a UNITED STATES PATENT @FFIQE.

JOHN COPE BUTTERFIELD AND TELFORD CLARENCE BATCHELOR, OF LONDON,ENGLAND.

CARTRIDG E-CAS E.

SPECIFICATION forming part of Letters Patent No. 542,041, dated July 2,1895.

Application filed January 9, 1892. Serial No. 417,523- (No model.)Patented in England September 5, 1889,1l0. 14,025.

To all whom it may concern:

Be it known that We, JOHN COPE BUTTER- FIELD and TELFORD CLARENCEBATOHELOR,

subjects of the Queen of England, residing at London, England, haveinvented certain new and useful Improvements in Damp-ProofCartridge-Cases, (for which We have obtained a patent in Great Britain,No. 14,025, dated September 5, 1889,) of which the following is aspecification.

This invention relates to the manufacture of cartridge-cases, preferablyof metal, such as lead, lead and antimony, or lead and tin, but whichmaybe made of vulcanite or some such material, and which shall beimpervious to moisture.

In the accompanying drawings, Figure 1 is a central longitudinal sectionshowing a cartridge-case constructed in accordance with this invention,and Fig. 2 is a transverse section of Fig. 1.

A is the main inclosing-casing, having a closed end A, which ispreferablyin part with the rest of the case, as shown, and is closed atits other end by a cap B, there being a water or damp tight jointbetween the parts A and B, which may be made by a coating of paint,resin, or by soldering, screwing, or other suitable means.

The case A is provided with a longitudinal groove or indentation in itsoutside, forming a pocket A for the reception of a detonator, which maybe placed in said pocket and secured by binding or other means. Thisgroove or pocket is shown as extending longitudinally of the case; butit may be otherwise arranged. The detonator thus applied, when ignited,will destroy the contiguous part of the case and explode the cartridge.

Generally, though not necessarily, the case will be cylindrical, and thepocket is also curved in cross-section, although it may be of any otherform desired, as these matters of form are not essential, as it does notmatter in what manner the detonator is applied, so long as it is indirect contact with the cartridge-case inclosing the explosive. Forexample, it would suffice if the detonator were merely bound to theexterior surface of the case, without any special provision being madefor its reception. I

By the above-described construction a cartridge-case is provided whichdoes not require to be out, opened, or tampered with in any way previousto firing, and one which may be hermetically sealed when first made andis never unsealed until exploded. Consequently it may be kept in a dampplace, or even under water, without damaging the explosive or spoilingthe cartridge.

We claim-- A closed cartridge case having an open pocket in the form ofan external groove formed in the case, and adapted to receive and holdthe detonator, substantially as described.

In testimony whereof we have hereto set our hands in the presence of thetwo subscribin g witnesses.

JOHN COPE BUTTERFIELD. TELFORD CLARENCE BATCHELOR. Witnesses:

ALFRED J. BoUE'r, HARRY B. BRIDGES.

